a woody plant having a single tall and erect main stem, generally with few or no branches on its lower part
a shrub or herbaceous plant that looks similar to a tree
a diagram or graph with a branching structure that shows the relationships or processes connecting the various elements plotted on it
a genealogical tree
a branched system, esp of veins, nerves, etc in an animal or plant body
the vascular tree
a piece of wood or a wooden structure
archaic or literary the cross on which Jesus was crucified
archaic a gallows
out of one's tree
chiefly NAmer, informal crazy
up a tree
chiefly NAmer, informal caught in a difficult situation with no apparent means of escape
treeless adj
treelessness noun
tree-like adj
[Old English trēow]